CN1281053C - Partial brightness adjusting device - Google Patents
Partial brightness adjusting device Download PDFInfo
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- CN1281053C CN1281053C CN 03133795 CN03133795A CN1281053C CN 1281053 C CN1281053 C CN 1281053C CN 03133795 CN03133795 CN 03133795 CN 03133795 A CN03133795 A CN 03133795A CN 1281053 C CN1281053 C CN 1281053C
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- amplifier
- image
- level
- voltage
- amplification
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Abstract
The present invention relates to a partial brightness adjusting device which is composed of an image amplifier, an amplification adjusting part, a horizontal or vertical mixed waveshape generating part, an amplifier and an overlapping part, wherein the image amplifier receives the input of image signals and amplifies the input of the image signals according to voltage input to an amplification adjusting terminal; the amplification adjusting part is arranged for adjusting the brightness of an entire picture and outputs amplification adjusting voltage; the horizontal or vertical mixed waveshape generating part is used for generating horizontal or vertical mixed waveshapes corresponding to a partial area; the amplifier is used for amplifying the horizontal or vertical mixed waveshapes; the overlapping part is used for overlapping the amplified horizontal or vertical mixed waveshapes output by the amplifier and the amplification adjusting voltage, and inputs the amplified horizontal or vertical mixed waveshapes to the amplification adjusting terminal of the image amplifier. As a result, the present invention has the advantage of partial brightness adjustment in an image display device.
Description
Technical field
The present invention is relevant with image display device, and is particularly relevant with the local luminance adjusting device of image display device.
Background technology
Usually, the image amplification process to image display devices such as television receiver, displays is described as follows with reference to Fig. 1: image amplifier 100 is to receive to provide it to image efferent 104 after the picture signal input is also all amplified.Image amplifier 100 has the adjustment terminal that is used for adjusting picture signal amplification degree and is provided with.Amplify the amplification adjustment part 102 that degree is provided with for adjusting picture signal, provide voltage to adjusting terminal according to desirable amplification degree.Be that image amplifier 100 is according to amplifying the voltage that adjustment part 102 provides, whole image being carried out the brightness adjustment.
But if utilize display of computer to show motion video, then therefore just motion video display window deepening, needs to do local brightness adjustment in this case.But,, therefore need exploitation local luminance adjustment technology because conventional art is only adjusted whole image.
Summary of the invention
Therefore, the purpose of this invention is to provide the local luminance adjusting device that in image display device, can carry out the image display device of brightness adjustment to local field.
The local luminance adjusting device of the image display device that is provided with for achieving the above object is by constituting with the lower part: receive picture signal and amplify the voltage of adjusting terminal according to being input to, it is amplified the image amplifier of output; For carrying out that the amplification adjustment part of amplifying adjustment voltage is exported in the brightness adjustment of whole image; The level and vertical hybrid waveform generating unit that are provided with for the level that produces the local field correspondence and vertical hybrid waveform; The amplifier that is provided with for amplification level and vertical hybrid waveform; For the level that is exaggerated and the vertical hybrid waveform of amplifier output with amplify adjustment voltage and carry out overlapping and be entered into the overlapping portion that the amplification adjustment terminal of image amplifier is provided with; Receive user command, and the microprocessor that level and vertical hybrid waveform generating unit and amplifier are controlled.
Advantageous effect of the present invention: as above-mentioned, the present invention has in image display device can carry out the strong point that local luminance is adjusted.
Description of drawings
It is as follows that formation of the present invention is done more detailed description in conjunction with the accompanying drawings:
Fig. 1 is expression traditional images amplification process schematic illustration.
Fig. 2 is for representing according to the present invention representative instance local luminance adjusting device square pie graph.
Fig. 3 is the movement oscillogram of presentation graphs 2.
Fig. 4 is the demonstration instance graph of expression according to representative instance of the present invention.
Embodiment
The local luminance adjusting device square of representative instance constitutes according to the present invention, can be with reference to Fig. 2, microprocessor 200 is not only controlled image display device comprehensively, and, be controlled to be the local luminance adjustment and the on-screen display menus OSD adjustment part 214 of output screen display menu OSD according to user command by user interface part 220 inputs; The representative instance according to the present invention produces and its corresponding level and vertical hybrid waveform for making the territory to needs adjustment brightness, and controlling level and vertical hybrid waveform generating unit 202.
Level is that the local field of needs being adjusted brightness produces and its corresponding level and vertical hybrid waveform, and provides it to amplifier 204 according to microprocessor 200 controls with vertical hybrid waveform generating unit 202; And amplifier 204 is the control according to microprocessor 200, and level is amplified output with vertical hybrid waveform; In the level that is exaggerated and vertical hybrid waveform of amplifier 204 outputs, shown in Fig. 3 (B), only become the signal of voltage variable in the territory of needs adjustment brightness.
And amplifying adjustment part 208 is to export adjustment voltage for the brightness adjustment to whole image, shown in Fig. 3 (A), as seen from the figure, becomes the signal of voltage variable this moment in whole field.
Amplify the adjustment voltage (A) of adjustment part 208 outputs and the level that is exaggerated and vertical hybrid waveform (B) of amplifier 204 outputs, undertaken overlapping by capacitor 206 and diode (D1) 210.Superimposed final adjustment voltage is adjusted terminal by the amplification that buffer amplifier 212 is input to image amplifier 216; Be input to the signal that this amplify to adjust terminal, shown in Fig. 3 (C), to whole field corresponding to adjusting voltage; And to local field corresponding to level that is exaggerated and vertical hybrid waveform; Image amplifier offers image efferent 218 with final picture.
Action diagrammatic illustration to microprocessor 200 is as follows: microprocessor 200, if the user then is shown as the local on-screen display menus OSD that adjusts by user interface part 220 request local luminance adjustment.If with reference to selecting local field and Dimmable amount, then for making its output corresponding to local field corresponding horizontal and vertical hybrid waveform controlling level and vertical hybrid waveform generating unit 202 for the on-screen display menus OSD user of local luminance adjustment; Its level is for making it amplify control amplifier 204 according to the Dimmable amount with vertical hybrid waveform.Because the level that is exaggerated and vertical hybrid waveform and adjustment voltage are overlapping and provide it to image amplifier 216, therefore, the brightness of corresponding local field can be increased and decreased.
The representative instance reference increase local field brightness example as shown in Figure 4 according to the present invention in the entire domain of picture, has only the brightness of the local field of being selected by the user (D) to increase according to user's selection as mentioned above.
Claims (2)
1. local luminance adjusting device is characterized in that it comprises the input that receives picture signal and amplifies the voltage of adjusting terminal it is amplified the image amplifier of output according to being input to; For to whole image brightness adjust and export amplification adjustment part that amplify to adjust voltage; Level and vertical hybrid waveform generating unit that the level of generation local field correspondence is provided with vertical hybrid waveform; The amplifier of amplification level and vertical hybrid waveform; For the level that is exaggerated and the vertical hybrid waveform of amplifier output with amplify adjustment voltage and carry out overlappingly, and be entered into the amplification adjustment terminal of image amplifier and the overlapping portion that is provided with; Receive user command, and the microprocessor that level and vertical hybrid waveform generating unit and amplifier are controlled.
2. local luminance adjusting device according to claim 1 is characterized in that it also comprises the user interface part that interface is provided to the user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133795 CN1281053C (en) | 2003-07-25 | 2003-07-25 | Partial brightness adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133795 CN1281053C (en) | 2003-07-25 | 2003-07-25 | Partial brightness adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571491A CN1571491A (en) | 2005-01-26 |
| CN1281053C true CN1281053C (en) | 2006-10-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03133795 Expired - Fee Related CN1281053C (en) | 2003-07-25 | 2003-07-25 | Partial brightness adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1281053C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745687B (en) * | 2013-12-04 | 2016-01-13 | 西安诺瓦电子科技有限公司 | Method for displaying image and image display device |
-
2003
- 2003-07-25 CN CN 03133795 patent/CN1281053C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1571491A (en) | 2005-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20120725 |